Probabilistic Shaping for Trellis-Coded Modulation With CRC-Aided List Decoding

Wang, Linfang; Song, Dan; Areces, Felipe; Wiegart, Thomas; Wesel, Richard D.

doi:10.1109/tcomm.2023.3237263

Cited by 6 publications

(3 citation statements)

References 32 publications

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“…To narrow the gap between the transmission capacity of the regular constellation modulation and the Shannon limit, the constellation shaping techniques have attracted researchers' attention. 3,4 The commonly used constellation shaping techniques include probabilistic shaping (PS) and geometric shaping (GS). 5,6 The constellation points of GS are equiprobable.…”

Section: Introductionmentioning

confidence: 99%

“…At present, regular quadrature amplitude modulation (R-QAM) formats provide a rough granularity for achievable information rates and transmission distances. To narrow the gap between the transmission capacity of the regular constellation modulation and the Shannon limit, the constellation shaping techniques have attracted researchers’ attention 3 , 4 …”

Section: Introductionmentioning

confidence: 99%

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Performance analysis of hybrid geometric-probabilistic shaped 8/12 quadrature amplitude modulation for coherent optical communication system

Liu

et al. 2023

Opt. Eng.

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.A hybrid shaping (HS) scheme based on geometric shaping (GS) and probabilistic shaping (PS) in a coherent optical communication system is proposed. A particle swarm optimization algorithm and Maxwell-Boltzmann distribution are employed to sequentially implement GS and PS. The results demonstrate that hybrid shaped 8/12-ary quadrature amplitude modulation (HS-8/12QAM) is superior to regular-8/12QAM (R-8/12QAM) in terms of reducing the bit error rate (BER) and increasing the generalized mutual information (GMI). HS-8QAM achieves a 2 dB optical signal-to-noise ratio (OSNR) gain and 0.45 bits / symbol GMI gain compared with R-8QAM. Meanwhile, HS-12QAM achieves 1.9 dB OSNR gain and 0.68 bits/symbol GMI gain compared with R-12QAM. In addition, HS-8/12QAM is better than R-8/12QAM in terms of transmission distance and data rate.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance analysis of hybrid geometric-probabilistic shaped 8/12 quadrature amplitude modulation for coherent optical communication system

Liu

et al. 2023

Opt. Eng.

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“…In the short block length regime, concatenating an inner convolutional code with an outer CRC code (referred to hereafter as ''CRC+CC'') with moderate/small memory has shown remarkable performance, closely approaching finite block length bounds [8] even at low error rates, while maintaining doable decoding complexity [4]. Extensive research has been conducted on CRC+CC schemes [1], [4], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20], [21].…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement of Space Missions Using Convolutional Codes by CRC-Aided List Viterbi Algorithms

2023

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We analyze the performance of enhanced spread spectrum Aloha (E-SSA) in the framework of unsourced multiple access (UMAC). The asynchronous, unframed transmission of E-SSA is modified to enable a direct comparison with framed UMAC schemes, as well as with the Polyanskiy's achievability bound. The design of E-SSA is tailored to the peculiarities of the UMAC setting, resorting to short polar codes and the use of a timing channel to improve the energy efficiency of the protocol. We assess the impact of the preamble length and of the spreading factor on the system efficiency. The resulting scheme exhibits simplicity at the transmitter and linear complexity with respect to the number of active users at the receiver, approaching the UMAC achievability bound in close competition with the best known UMAC schemes.

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